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From: jeays@statcan.ca (Mike Jeays)
Message-Id: <199612180407.XAA24425@statcan.ca>
Subject: CD ROM problems again
To: freebsd-hardware@freebsd.org
Date: Tue, 17 Dec 1996 23:07:42 -0500 (EST)
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Subject: Re: IDE CDROM failure report.
Newsgroups: comp.unix.bsd.freebsd.misc
Organization: Statistics Canada
Summary: 
Keywords: 

To add to my recent message about not being able to
detect a Panasonic CR-583 (8x) CD-ROM, I have since
found out the following:

With Release 2.1.5 (and no doubt 2.1.6, as I was told there
were no changes in the relevant code), the boot code will
only identify this device if it is the *slave* on either of
the two controllers.

I then did a full install with the following configuration:

  Wdc0 Master  :  Windows 95 disk
  Wdc0 Slave   :  Panasonic CR-583
  Wdc1 Master  :  FreeBSD disk

Seemed to work OK - until I tried to boot the new system.
It detected all the devices correctly (but with quite long
pauses for the second controller), and then failed with

  Changing root device to wd1a
  Panic : cannot mount root.

I then exchanged the positions of the FreeBSD disk and
the CD-ROM, and it booted successfully.

Can I get around this in any way?  I can only run my
system with the disks in the second order, and then the
CD is not detected at boot time.

Finally, I downloaded the 2.2_ALPHA boot diskette, and this
identifies the CD-ROM when it is the master device on the
second controller - so there is hope the bug will be fixed
in release 2.2.  Great!